Modifying entry names in directory server

A directory server comprising:

• a directory database storage means for storing a directory database;
• operation processing means for processing a request for operation on the directory database;
• entry mapping information storage means for storing entry mapping information, wherein each piece of entry mapping information is used for indicating a correspondence relation between pre-modification entry name information and post-modification entry name information;
• wherein the entry mapping information is recorded in an entry mapping information table, and each record of the entry mapping information table includes a pre-modification name field and a post-modification name field;
• entry mapping maintenance and processing means for receiving a request to modify a set of entry names, and modifying, prior to modifying the set of entry names, entry mapping information in accordance with the request the set of entry names, and for providing entry mapping information to the operation processing means when a preset condition for updating the directory database is met, so as to asynchronously perform a modifying operation of a corresponding entry name in accordance with respective pieces of entry mapping information when a predetermined condition for updating the directory database is met
• wherein the predetermined condition for updating includes at least one of:
• asynchronously performing modifying operation of entry names in a specific period of time;
• and
• asynchronously performing modifying operation of entry names when a modification workload reaches a predetermined threshold;
• searching entries of the directory database and the post-modification name field of the entry mapping table in order to determine whether or not there is an entry name that are the same as the entry name after a requested modification;
• wherein the entry mapping maintenance and processing means is further configured for:
• searching, in response to a result that no entry name that is the same as the entry name after the modification that is requested is found, the pre-modification name field of the entry mapping table in order to determine whether or not there is a entry name that is the same as the entry name before the modification that is requested;
• and
• adding, in response to the result that no entry name that is the same as the entry name before the modification that is requested is found, a new mapping record to the entry mapping table, wherein the pre-modification name field of the record records information associated with the entry name before the modification that is requested, and the post-modification name field records information associated with the entry name after the modification that is requested.